Engine-speed governor.



S. F. HUNT.

ENGINE SPEED GOVERNOR.

APPLlCATiON FILED FEB. 18. 1918.

Patented Nov. 19, 1918,

TFHUNT U; a a

,fia/erdor; Sam

I it EST AVAiLABLE COt scam I". HUNT, or person, mrcnreen.

ENGINE-SPEED GOVERNOR.

Specification of Letters Patent.

Patented Nov. 19, 1918.

Application filed February 18, 1918. Serial No. 217,883.

ing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Engine Speed Governors, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a speed governor for internal combustion engines, and has special reference to a governor equipment which may be incorporated in the intake manifold of an engine, between the carbureter and the engine cylinders.

The primary object of my invention is to provide an engine speed governor wherein the passage of air or fuel through the device automatically regulates a rotary shutter, and associated with such shutter is mechanical means for actuating said shutter in reverse direction to that in which the shutter is actuated by the passage of fuel or air through the device, and in this manner the supply of fuel is regulated in accordance with the speed or duty of the engine.

A further object of my invention is to provide a governor fuel regulator wherein the supply of fuel is in proportion to the requirements of an engine, the device serving somewhat similar to an automatic choke or valvular member, so that a minimum amount of fuel will only be used for the efiiciency of an engine, thus saving fuel by eliminating overcharging of the engine cylinders.

The above and other objects are attained by a mechanical construction wherein the parts are constructed with a. view of reducing the cost of manufacture and at the same time retain those features by which durability, simplicity of construction, and ease of installation and assembling-are secured The construction will be hereinafter considered in detail and reference will now behad to the drawing, wherein Figure 1 is a side elevation of the speed overnor, as installed between a carbureter and the cylinders of an engine;

vFig. 2 is a vertical sectional view of the is a plan of the same;

Fig. l is a perspective view of the rotary shutter, and

Fig. 5 is a perspective view of the station ary shutter.

In the drawing 1 denotes a tubular member or connection having flanged ends 2 so that it may be mounted between a carburetor connection 3 and the intake manifold i of an internal combustion engine 5. This arrangement of the tubular member 1 permits fuel and air from the carbureter to pass therethrough.

Suitably fixed in the upper end of the tubular member 1 is a stationary horizontally disposed shutter 6 having a plurality of sector shaped openings 7 and a central opening 8. Mounted on the solid portions 9 of the shutter are inverted V shaped deflectors 10, and said deflectors are adapted to disseminate fuel in theupper part of the member 1 so that the fuel will have the benefit of the entire passage in the upper end of the member 1 and into the intake manifold 4. The deflectors serve to provide flared passages into the u per end of the member 1, thus preventing el and air traveling in strata or separate streams.

Rotatable against the lower face of the stationary shutter 6 is a rotary shutter 11 having sector shaped opening 12, solid portions 13, and a central pin 14: by which the rotary shutter is rotata ly held against the stationary shutter. The sector shaped openings 12 are the same area as the openings 7. of the stationary shutter 6 and the solid portions 13 of the rotary shutter are provided with depending stream-line deflectors 15, which have the upper ends thereof V-shaped in cross section and the lower ends thereof merging into fins or blades, thus providing tapering or stream-line passages to the openings 12, a combined area of the lower end of the passages being practically the equivalent of the cross sectional area of the member 1, while the upper ends of said passages are defined by the openings 12.

The upper end of one of the deflectors 15 has a solid portion 16 provided with an outwardly extending or radially disposed screw 17, which protrudes through a se ent shaped slot 23 in the wall of the memli di' 1, as best shown in Fig. 2. The screw 17 protrudes into a hollow casing 18 tangentially disposed on the periphery of the member 1, and the inner end of the casing 18 1s provided with an Opening so that the screw 17 may be laced in position, said opening then being ugged or closed, as indicated at 19.

In t e outer end of the hollow casing 18 is an adjustable screw or plug 20 and con nected to the inner end of said screw is a coiled retractile spring 21 which has the inner end thereof connected to the screw 17. The retractile force of the spring 21 is at a tangent to and away from a counterclockwise movement of the rotary shutter, and in consequence of this arrangement, the screw 17 is maintained against an end wall of the slot in the member 1 and with the screw in this position, the openings 12 of the rotary shutter register with the openings 7 of-the stationary shutter, thereby permitti of fuel passing through both shutters wit out being materially retarded.

In the variable operation of the internal combustion engine 5, the greater the velocity of fuel or air passing upwardly through the member 1, the greater the efiect on the rotary shutter to shift the same in a counterclockwise direction and against the retractile force of the spring 21. As the fuel and air impinges against .the walls of the deflectors or blades 15, the shutter 11 is shifted and tends to close the shutter 6; the maximum velocity cutting down the supply of fuel to a minimum and as the velocity decreases, the spring 21 is permitted to gradually restore the rotary shutterto normal position. By increasing or decreasing the retractile force of the spring 21, through the medium of the screw or plug 20, the automatic actionof the rotary shutter relative tothe stationary shutter may be minutely controlled.

From the foregoing it will be observed that the governor may be incorporated in a .carbureter or any place orat any angle so long as fuel passes through the same, and by providing the rotary shutter 11 with suitable bearin the member 1 may be placed in a horizonta position. Further, the direction of shutter rotation depends on whether the.

spring 21 is retractile or com ression and whether the blades 15 are esigned for proper direction of rotation.

A governor such as above described can be advantageously used in connection with the fuel supply of motor trucks and heavy vehicles where it is desirable to limit the driver of the truck to a predetermined speed or range of speeds, thus eliminating accidents and in ury to an en e.

It is thought that the operationand utility of the fuel re lating device will be apparent without rther descri tion and while in the-drawing there is ustrated a referred embodiment of my invention, it is to nee les be understood that the structural elements are susceptible to such variations and modifications as fall within the scope of the apwhich combustible charges are adapted to pass to an engine and be automatically actuated by the charges passing through said passages to the engine to regulate the same, and stationary deflectors above said rotary deflectors providing diverging passages to facilitate the movement of the charges from the converging passages.

2. A device of the type described comprising a member forming a passage for carbureted air, a stationary shutter in said member, a rotary shutter adjacent to said stationary shutter having long stream-line walls contacting with the walls of said member and providing converging passages which cause the velocity of carbureted air passing through said passages to rotate said shutter in one direction, and yieldable means connected to said rotary shutter and disposed at a tangent thereto adapted to rotate said shutter in a reverse direction.

3. A device of the type described comprising a member forming a passage for fuel, a shutter in said member, resilient means disposed at a. tangent to said shutter to normally maintain said shutter in position and stream-line deflectors carried by said shutter and providing long walls against which fuel is adapted to impinge to cause closing movement of said shutter.

' 4. A device of the character described comprising a member through which fuel is adapted to be drawn by engine inspiration, a stationary shutter in said member providing diverging passages, a rotary shutter ad:

jacent said stationary shutter, blades car ried -by said rotary shutter and against which fuel is adapted to impinge to adjust justing said shutter the opposite direc-' tion.

5. A governor comprising a member formin a cylindrical passage 'through which fluid is adapted to be drawn by engine inspiration, stationary deflectors in said member providi diverging assages and a rotary shutter in said mem er adjacent said stationary shutter, and having streamline blades throughout the eater part of said cylindrical passage an against which the fluid is adapted to impinge and which In testimony whereof I afiix my signature offferfi aflmlnimum resistahnce to the passage in the presence of two witnesses.

o t e uid into said verging passages said blades being adapted to rotate 'said SCOTT HUNT 5 shutter to regulate the passage of fluid and- Witnesses:

limit the engine to a predetermined range ANNA M. Donn, of speed. CHAS. W. STAUFFEGER. 

